TRANSFORMATION OF MORPHOLOGY OF AS-EXTRUDATES OF HIGH-DENSITY/ LINEAR LOW-DENSITY POLYETHYLENE DRAWN TAPES

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RANA S.K.

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Journal Paper

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Journal: Iranian Polymer Journal Year:2000 | Volume:9 | Issue:4 Page(s): 229-238

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Title

TRANSFORMATION OF MORPHOLOGY OF AS-EXTRUDATES OF HIGH-DENSITY/ LINEAR LOW-DENSITY POLYETHYLENE DRAWN TAPES

Author(s)

RANA S.K. | Issue Writer Certificate

Keywords

MORPHOLOGY

DRAWN TAPE

POLYETHYLENE BLEND TAPES

AS-EXTRUDATE MORPHOLOGY

TRANSFORMATION OF MORPHOLOGY

Abstract

Drawn tapes were manufactured by mechanical drawing on a hot plate maintained at 82°C from as- extrudates with different crystallinities from highdensity polyethylene (HDPE) to small quantity of linear low-density polyethylene (LLDPE). The process of drawing was analyzed to understand the effects of the percentage crystallinity of as-extrudates on the mechanical properties of the DRAWN TAPEs. Incorporation of LLDPE up to 15 % LLDPE systematically decreases the percentage crystallinity of as-extrudate by 25 % . It was also noticed that the initial differences in crystallinity were not reflected in the drawn tapes. However, the as-extrudate with higher initial percentage crystallinity produced a tape with better mechanical properties than the asextrudate with lower crystallinity. The coarse fibril formation is seen in the flakelike crystalline bodies of the as-extrudates. This fibrillar formation is quite distinct with HDPE as-extrudate. On drawing, the flake-like crystalline bodies disintegrate to fibrils. The higher inter-planar spacing helps in the formation of uniform and finer fibrils. Finer and uniform fibrils free of branching and discontinuity perhaps are imperative for better mechanical properties. The HDPE as-extrudate with high percentage crystallinity and good fibrillar formation provides a better precursor for the high tenacity and modulus tape.

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APA: Copy

RANA, S.K.. (2000). TRANSFORMATION OF MORPHOLOGY OF AS-EXTRUDATES OF HIGH-DENSITY/ LINEAR LOW-DENSITY POLYETHYLENE DRAWN TAPES. IRANIAN POLYMER JOURNAL (ENGLISH), 9(4), 229-238. SID. https://sid.ir/paper/533442/en

Vancouver: Copy

RANA S.K.. TRANSFORMATION OF MORPHOLOGY OF AS-EXTRUDATES OF HIGH-DENSITY/ LINEAR LOW-DENSITY POLYETHYLENE DRAWN TAPES. IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2000;9(4):229-238. Available from: https://sid.ir/paper/533442/en

IEEE: Copy

S.K. RANA, “TRANSFORMATION OF MORPHOLOGY OF AS-EXTRUDATES OF HIGH-DENSITY/ LINEAR LOW-DENSITY POLYETHYLENE DRAWN TAPES,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 9, no. 4, pp. 229–238, 2000, [Online]. Available: https://sid.ir/paper/533442/en

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